This paper expounds the 3D modelling of the MFL imaging system to monitoring the outer surface defects in Ferromagnetic Steam Generator Tube (SGT). It features a new flaw detection technique in conjunction with the Magnetic Flux Leakage (MFL) inspection and Digital Imaging. It delivers information of the defective tube surface in the form of a digital image. The impact of variation in the dimen...

Acknowledgements First, I would like to express my gratitude to my promoter prof. K. Neyts, for giving me the privilege to conduct this PhD work under his supervision. Throughout this research, he provided me with continuous scientific help, valuable advice and lots of new ideas, which inspired and motivated my work. His great talent to explain things clearly and simply helped me to understand ...

Methods allowing the oxidation of graphite to graphene oxide (GO) are vital important for the production of graphene from GO. This oxidation reaction has mainly relied on strong acid strategy for 174 years, which circumvents issues associated with toxicity of reagent and product, complex post-treatment, high cost and waste generation. Here, we report a green route for performing this oxidizatio...

Strengthening of the existing reinforced concrete (RC) column is nessesary to enhance their axial load-carrying capacity or ductility. This paper presents results an experimental study relating performance columns strengthened with different techniques such as steel angle, straps, and ferro-cement under pure load. A total six square short were constructed. The cross-section height tested are 15...

Recently thin-film ferroelectrics such as Pb(Zr, Ti)O3 (PZT) and (Ba, Sr)TiO3 (BST) have been utilized to form advanced semiconductor and electronic devices including Ferroelectric Ran‐ dom Access memory(FeRAM), actuators composing gyro meters, portable camera modules, and tunable devices for smart phone applications and so on. Processing technology of ferro‐ electric materials is one of the mo...

Radio-frequency interference (RFI) has long been identified as a problem in L-band Synthetic Aperture Radar (SAR), as it is limiting the application, performance, and data quality of SAR at many areas around the globe. Several algorithms for RFI mitigation have been developed throughout the recent decades (Le, et al., 1998; Reigber and Ferro-Famil, 2005; Rosen, et al., 2008) in response to this...

Seven heavy metals, Co, Cr, Cu, Fe, Mn, Ni and Zn, were measured in marine sediments, plants and invertebrates in the vicinity of a ferro-nickel smelting plant in Greece. The concentrations of metals in the sediment were higher than those found in the average unpolluted Greek coastal sediment. High levels of metals were observed in the gastropod molluscs, particularly Cerithium vulgatum, which ...

41 Abstract Ferro convection induced by magnetic field dependent viscosity in an anisotropic porous medium using Darcy model is studied with computational methods. Galerkin method is applied. Linear stability analysis is carried out for both stationary and oscillatory modes. The critical magnetic Rayleigh number is computed for various values of the parameters which characterize the flow. It is...

We investigate the phase diagram of S=1 quantum spin systems with SU(2)-invariant interactions, at low temperatures and in three spatial dimensions. Symmetry breaking and the nature of extremal states can be studied using random loop representations. The latter confirm the occurrence of ferro- and antiferromagnetic transitions and the breaking of SU(3) invariance. And they reveal the peculiar n...

Reinhold Schmidt, MD; Andrea Berghold, PhD; Hanna Jokinen, PhD; Alida A. Gouw, MD, PhD; Wiesje M. van der Flier, PhD; Frederik Barkhof, MD, PhD; Philip Scheltens, MD; Katja Petrovic, Msc; Sofia Madureira, PsyD; Ana Verdelho, MD; Jose M. Ferro, MD, PhD; Gunhild Waldemar, MD; Anders Wallin, MD; Lars-Olof Wahlund, MD; Anna Poggesi, MD; Leonardo Pantoni, MD, PhD; Domenico Inzitari, MD; Franz Fazeka...